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(No Model.) a Sheets-Sheet 1. C. A. MARRDER. CAR HEATING APPARATUS.

Patented June 4, 1889'.

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(No Model.) 3 Sheets-Sheet 2. 0. A. MARRDER.

GAR HEATING APPARATUS.

No. 404.492. Patented June 4, 1889.

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' UNITED STATES PATENT OFF CE.

CHARLES ADOLPH MARRDER, OF NEW YORK, N. Y.

CAR-HEATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 404,492, dated June 4, 1889.

' Application filed March 17, 1888. erial No. 267,552., (No model.) i

To aZZ whom it m nty concern:

Be it known that I, CHARLES ADOLPH MARRDEB, of the city, county, and State of New York, have invented 'cert-ain new and useful Improvements in Car-Heating Apparatus, of which the followingis a specification.

This invention has reference to an improved system of heating cars by means of hot water or hot air, in which the exhaust-steam of the locomotive, as well as the heat of the products of combustion passing out through the smoke-stack of the locomotive, is utilized for heating purposes; and the invention consists in arranging in the smoke-stack of the 1000- motive a closed tubular reservoir provided with a central exhaust-channel, and arranging heating-coils in the space between the smoke-stack and the reservoir, said heatingcoils being connected with said reservoir and provided with an outletrpipe leading to the radiating-pipes in the ears to be heated, as will appear fully hereinafter, and be finally defined in the claims.

In the accompanying drawings, Figure 1 represents a vertical central section of a smoke-stack of a locomotive with my improved heating attachment, the latter being shown in side elevation and with a part broken away. Fig. 2 is a vertical central section of the heating attachment, shown as removed from the smoke-stack. Fig. 3 is a vertical central section of the hot-water reservoir of the heating attachment. Fig. 4 is a vertical central section of the smoke-stack and heater, the latter being provided with an injector for acceleratingthe motion of the water through the heating-coils; and Fig. 5 is a vertical central section through the heater, shown in Fig. 4, it being removed from the smoke-stack, and Figs. 6 and 7 are a side elevation and a vertical central section of a modified form of heating apparatus.

Similar letters of reference indicate corre- 'sponding parts.

f unnel-shaped upper end B which communicates with the central channel 6 of the res ervoir B. The exhaust-steam is passed upwardly through the central channel into the upper end of the smoke-stack A, while the products of combustion pass in the annular space between the smoke-stack and the tubular reservoir B and around the enlarged head of the same to the outside of the smokestack. In the annular space below the head B of the reservoir B are arranged heatingcoils C and D of different diameters, which are connected directly to the head of the reservoir, as shown in Figs. 6 and 7, or one only being connected to the upper part and the other to the lower part of the reservoir, in which latter case the upper end of the coil is bent in upward direction into the funnel-shaped part B of the reservoir B and into a helical coil 0, as shown in Figs.1,2, 4, and 5. The ends of the coils O and D are connected by inlet and outlet pipes with the radiating-pipes which are located either in the cars or at any other suitable point of the same, as the case may be.

For the purpose of accelerating the motion of the hot water or brine in theheating-coils and the system of radiating-pipes in the cars,

an injector E is arranged in the helical coil 0, located in thefunnelshaped upper part of the reservoir B, as shown in Figs. 4 and 5. The steam for working said injector may be supplied by a small steam-pipe f from the steam-space in the upper part of the enlarged head of the reservoir B, or directly by a pipe f from the boiler of the locomotive, as shown, respectively, in Figs. 4 and 5. The inlet-pipe C is preferably conducted through the tubular channel I) of the reservoir to the coil 0', while the outlet-pipe D connects the lower end of the coil D with the system of radiating-pipes. The inlet-pipe 0 may also be connected directly to the lower end of the reservoir B, in which case the coils O D are either both connected to the head of the receptacle B and their lower ends to the system of radiating-pipes in the cars, as shown in Figs. 6 and 7, or the lower end of the reservoir B may be connected wit-l1 an additional supply-pipe, as shown in Figs. 2 and 5. The supply-pipe 0 as well as the lowerend of the coil 0 at its connection with the reservoir, may be provided with two-way valves (Z (Z, for facilitating the charging of the reservoir B and the system of radiating-pipes, and for establishing the direct connection of the coil Owith the radiating system or the indirect connection with the reservoir 13, as shown in Figs. 2 and 5.

By means of the heater located in the smoke-stack of the locomotive and the regulating-chamber formed in the upper part of the reservoir, as shown in Fig. 1, above the level of the liquid in the reservoir, and which is filled with steam, a continuous circulation of hot water or brine is kept up through the coils, reservoir, and the system of radiatingpipes, so that the cars are heated in an effective manner by the heat of the exhaust-steam and of the products of combustion, which heat would otherwise pass out of the smoke-stack without being utilized. The cooled-off water or brine is returned to the heating apparatus in the smoke-stack and heated up in its passage through the same and conducted again through the radiating-pipe, and so on. It is obvious that in place of hot water air may be passed through the heating attachment. In this case an injector or any other suit able air-forcing apparatushas to be employed for forcing the air at the required speed and in the required quantity through the reservoir and the heating-coils, which airis heated up in its passage through the heating attachment and then distributed in the cars by suitable flues.

Having th us described my invention, I claim as new and desire to secure by Letters laten t 1. The combination, with the smoke-stack of a locomotive, of a closed tubular reservoir located in the smoke-stack and provided with a central exhaustchannel and heating-coils located in the space between the smoke-stack and the reservoir and being connected with 'said reservoir, and having an outlet-pipe leading to the radiating-pipes in the cars to be heated, substantially as set forth.

2. The combination, with the smoke-stack of alocomotive, of a closed tubular reservoir located in the smoke-stack and provided with an enlarged head and a central exhaust-channel, and heating-coils located in the space be tween the Smokestack and the reservoir and being connected with said reservoir, and having an outlet-pipe leading to the radiatingpipes in the cars to be heated, substantially as set forth.

3. The combination, with the smoke-stack of a locomotive, of a closed tubular reservoir located in the smoke-stack, h eating-coils in the smoke-stack connected with said reservoir, an inlet-pipe through the channel in the reservoir to one of said coils, and an outlet-pipe connected with the other coil, substantially as set forth.

4. The combination, with the smoke-stack of a locomotive, of a closed tubular reservoir in the smoke-stack provided with an enlarged head an d funnel-shaped top, heating-coils connected to said reservoir, an intermediate heating-coil above said head, connected to one of said coils, an inlet-pipe connected with said intermediate coil, and an outlet-pipe connected to the otherheating-coil, substantially as set forth.

5. The combination, with the smoke-stack of a locomotive, of a closed tubular reservoir in said smoke-stack, heating-coils connected to said reservoir, a supplypipe passing through the inner channel of the reservoir, a coil connected with said supply-pipe at the upper part of the reservoir and with one of the heating-coils, an injeeiorin said coil, and an outlet-pipe connected with the lower end of the other coil, substantially as set forth.

In testimony that I claim the foregoing as my invention Ihave signed my name in presence of two subscribing witnesses.

C. ADOLPH MARRDER.

Witnesses:

MARTIN Pnrnv, JOHN A. STRALEY. 

